This paper examines the historical background of the Assumption Sisters of Eldoret (ASE), its Charism and apostolate and the secondary schools run by the ASE. It seeks to understand how the Sisters deal with discipline and performance in their schools. The paper also looks at the role of ASE in the management of the schools especially in financing, staff development and checking the facilities, how they handle the challenges facing the secondary schools that are run by the Sisters. The paper concludes and gives a way forward on how to improve the running of the schools run by the Assumption Sisters of Eldoret.